A 3-year-old Queens girl died last night after falling five floors from the window of a bathroom, where she had accidentally gotten locked inside with her little sister, police said.

Rydyoshi Barua was found shortly after 2:30 p.m., writhing in the snow in the courtyard of the Woodside apartment building where her family lives. She was rushed to Elmhurst Hospital, where she later died.

Rydyoshi and her 2-year-old sister had somehow gotten themselves locked in the bathroom, prompting their frantic parents to summon the building superintendent.

“They called me and said the kids were locked in the bathroom,” said Hazar Addyli, the super. “I went in, and there was one.”

“Where’s the other kid? Where’s the other kid?” Addyli recalled asking the 2-year-old.

The frightened toddler said nothing but pointed to the window, he said.

“I went downstairs in the back and found the child,” he said. “I called 911.”

Police are trying to determine how the girls got locked in and how long they were inside before Rydyoshi fell. No criminality is suspected, they said.

It was not clear if the window was already open when the girls went into the bathroom, but there were no protective bars installed.

Addyli insisted all of the 32nd Street apartment’s windows had safety bars installed when the family moved in.

He added there had been no requests to fix or replace any of the bars.

One neighbor, Ira Oppenheimer, said the child’s parents were hysterical after the fall.

“The father came running down with the wife,” Oppenheimer said. “He didn’t have any shoes on. They were both screaming as they were running toward to the ambulance. The father was yelling, ‘That’s my daughter! That’s my daughter!’ ”

A family friend, Shaikritty Barua, 39, escorted wailing dad Pappu Barua, no relation, out of Elmhurst Hospital last night. The little girl’s mother was with them but could barely walk.

“It’s very sad. You can’t imagine, for now, they lost a child. They are not able to talk,” Barua said.